Peptide Synthesis ma Bioconjugation Chemistries: Se Iloiloga Maualalo o Peptide-DNA ma Peptide-Protein Coupling Strategies

Pu'upu'u

Peptide Synthesis Supplier Bioconjugates faʻavae peptide-faʻapitoa peptide-DNA chimeras ma peptide-protein complexes-ua tulaʻi mai o ni faʻataʻitaʻiga mole mole mataʻutia i luga ole biopharmaceuticals faʻatatau., gene fe'avea'i vectors, su'esu'e biosensors, ma le DNA-encoded chemical library (DECLs). O le fa'apotopotoga sa'o o nei macromolecules hybrid e mana'omia ai se ta'iala fa'akomepiuta fa'apitoa e fa'afeso'ota'i lelei le fa'asologa o le peptide peptide muamua. (SPSS) fa'atasi ai ma chemoseective, fa'asologa o le bioconjugation maualuga. O lenei pepa o loʻo tuʻuina atu ai se iloiloga faʻapitoa faʻapitoa o peptide-DNA kemisi faʻatasi ma peptide-protein ligation taʻiala. Matou te su'esu'eina fa'asolosolo peptide fa'apotopotoga e ala i le Fmoc/tBu SPPS, fa'apipi'i 'au fa'afofoga (azides, alkynes, thiols, i le fusuaga), ma faiga fa'atusa fa'atusa e aofia ai le fa'aopoopoina o le thiol-maleimide, fa'a-fa'a'apa (CuAAC) ma fa'atupu fa'amamafa (SPAAC) azide-alkyne cycloaddition, ma fa'afesootai fa'atasi. E lē gata i lea, matou te fa'avasegaina fa'amama su'esu'ega fa'amama galuega fa'aogaina e fa'aogaina ai le chromatography sua fa'asolosolo fa'asolosolo maualuga. (RP-HPLC) ma electrospray ionization/MALDI-TOF tele spectrometry (ESI-MS/MALDI-TOF MS), a'o fa'amamafaina le fa'ama'oti ma le fa'amautinoaina o tulaga lelei e mana'omia mo le fua fa'aliliuga.

Tusitala Bio & Fa'amatalaga o Tomai Fa'apitoa: O lenei iloiloga na tusia e le MOL Suia Peptide Su'esu'ega Vaega, e aofia ai le Ph.D. fa'apitoa i kemisi fa'aola, fa'aola kemikolo, ma bioconjugation tekinolosi. Fa'atasi ai ma le tele o tomai fa'apitoa ile SPPS masani, ua uma 300 suiga peptide galue, ma le Vasega 100 potu mama biomanufacturing, o la matou 'au e tu'uina atu ta'iala fa'apitoa mo atina'e tau a'oa'oga ma vaila'au i le lalolagi atoa.

1. Folasaga: Le Evolution of Peptide Hybrid Bioconjugates

Kamupani Peptide Synthesis O le tuʻufaʻatasia o peptides faʻapipiʻi ma oligonucleotides ma polotini galue e fai ma sui o le maatulimanu o biotechnology faʻaonaponei ma vailaʻau mole.. Peptides fa'aola e maua ai le fa'apitoa fa'atatau, gafatia e ati ai sela, ma nofoaga e vaevae ai le enzymatic. Pe a feso'ota'i fa'atasi i nucleic acids po'o polotini e feavea'i, o lo'o fa'atupuina feso'ota'iga fa'atasi o lo'o fa'aalia ai gaioioiga fa'aolaola e leai se vaega o lo'o umia tuto'atasi.

I su'esu'ega fa'afoma'i, peptides e ati i sela (CPPs) fa'atasi fa'atasi ma oligonucleotides antisense (ASOs) poʻo RNA faʻalavelave laiti (siRNAs) faʻafaigofie le faʻaogaina o le intracellular uptake ma le sola endosomal. I su'esu'ega mole mole ma le biology kemikolo, peptide-oligonucleotide conjugates (POCs) fa'ataga su'esu'ega fa'alatalata fa'alatalata maualuga ma le fausiaina o faletusi mafiafia DNA mo le su'eina o vaila'au.. E faapena foi, peptide-protein bioconjugation e avea o se kemisi faavae mo tui polotini peptide-carrier. (e.g., KLH, BSA, po'o OVA fa'atasi) ma fa'atatau i antibody-peptide fausia.

Fale su'esu'e o le Peptide Synthesis Ausiaina maualuga-fua, bioconjugation fa'apitoa i luga ole laiga e maua ai le tele o fa'alavelave fa'ama'i. Eseesega i solubility, tulaga mautu, fa'alavelave fa'alavelave, ma nucleophilic itu-chain reactivity i le va peptides, DNA, ma polotini e mana'omia ai le fa'ata'ita'iina o vaila'au ma'oti. O le manuia e fa'alagolago i le filifilia o au fa'afoma'i fa'aolaola e fetaui lelei, fa'ainisinia sili ona lelei feso'ota'iga spacers, pulea fua faatatau stoichiometric, ma le fa'atinoina o le fa'amamāina chromatographic maualuga.

2. Precursor Assembly e ala ile Solid-Phase Peptide Synthesis (SPSS)

A'o le'i faia le bioconjugation i lalo, o le pa'aga peptide synthetic e tatau ona fa'ainisinia ma le fa'amaoni atoatoa o vaila'au ma mua'i fa'agaioiina ma fa'aulu fa'apitoa.. O le gaosiga fa'aonaponei o lo'o fa'alagolago tele i le fa'aola Fa'atosina-Phase Peptide Fa'atupu (SPSS) metotia.

Key Takeaway: O le peptide-DNA ma le peptide-protein bioconjugation e manaʻomia le faʻapipiʻiina o au vailaʻau i le taimi o le faʻapotopotoga faʻamautu nai lo le maeʻa., le puipuia o fa'alavelave fa'apitoa fa'atasi ma toega nucleophilic amino acid i totonu.

       Fmoc-SPPS Precursor Chain Assembly
                       │
  [Resin]-AA1-AA2-AA3-···-AA_n-(NH2 / Side-Chain)
                       │
       Bioorthogonal Handle Coupling
      (e.g., 5-Azidopentanoic Acid or Cys)
                       │
       TFA / Scavenger Cocktail Cleavage
                       │
  Crude Functionalized Peptide (RP-HPLC Purity ≥95%)

2.1 Puipuia Fuafuaga Fuafuaga ma Filifiliga Resin

O le tulaga masani 9-fluorenylmethoxycarbonyl (Fmoc) / tert-butyl (tBu) e sili atu le faiga o le puipuiga mo le sauniaina o mea e fai ai le bioconjugation ona o lona malu, tulaga fa'avae fa'asa'o fa'aauau (20% piperidine ile DMF) ma le vaeluaga faai'u acidic.

• Filifiliga Lagolago Resin:
  • Wang Resin: Fa'aaogaina pe a maua fua le C-terminal carboxylic acid (-COOH) e mana'omia mo le fa'aogaina o le enzymatic i lalo po'o le vaifofo fa'atasi.
  • Rink Amide Resin: E sili pe a C-terminal carboxamide (-CONH2) e mana'omia le fa'apipi'i e fa'ata'ita'i ai vaega ole polotini, faʻateleina le mautu o le enzymatic e faasaga i carboxypeptidases, po'o le 'ave'ese o se vaega fa'a-ionia e le mana'omia.

A'o fa'aumiumi filifili filifili, fa'atosina fa'atosina i fa'asologa faigata (e.g., hydrophobic fa'aloloa po'o le β-pepa fa'apena vaega) e fa'aitiitia le fa'aaogaina o mea fa'apipi'i fa'atasi aminium/phosphonium malosi e pei ole HATU (1-[Bis(dimethylamino)methylene]-1H-1,2,3-triazolo[4,5-e]pyridinium 3-oxide hexafluorophosphate) po'o le PyBOP i luma ole DIPEA.

2.2 Fa'atulagaina U'u Fa'atino i Resin

Ina ia mafai ai le faʻaogaina o le kemoselective, vaega fa'atino e le o tupu i biomolecules fa'aletino o lo'o tu'ufa'atasia sa'o i luga ole N-terminus po'o filifili itu fa'apitoa ile SPPS:

1. U'u Azide ma Alkyne: Faʻatasi i le N-terminus e faʻaaoga ai le 5-azidopentanoic acid, 4-pentynoic acid, po o Fmoc-L-Lys(N3)-OH i le taimi otometi elongation e saunia precursors mo kiliki kemisi.
2. U'u Thiol: Fa'ailoa mai ile N-terminal po'o le C-terminal Cys(Trt) toega. Trityl (Trt) o lo'o tumau pea le puipuiga i le taimi o le fa'ate'aina o le Fmoc ma fa'asa'oloto i le taimi o le vaeluaga mulimuli.
3. U'u Maleimide: Fa'ailoa mai e ala ile 3-maleimidopropionic acid fa'apipi'i ile N-terminus a'o le'i va'aia le TFA., tu'uina atu tu'utu'uga scavenger e matua fa'atulafonoina ina ia aloese mai le maleimide mama mama.

2.3 Vaevae, Puipuiga, ma le Fa'atonuga Tulaga Lelei

O le vaeluaga mulimuli mai le lagolago mautu ma le fa'agata fa'atasi o le filifili o le itu e fa'atinoina e fa'aaoga ai le trifluoroacetic acid. (TFA) cocktail o lo'o iai nucleophilic scavengers:

$$\tusitusiga{Cleavage Cocktail: TFA / TIS / }\tusitusiga{H}_2\text{O} \tusitusiga{ / EDT } (92.5 : 2.5 : 2.5 : 2.5 \tusitusiga{ v/v})$$

Ethanedithiol (EDT) poʻo le 1,4-dithiothreitol (DTT) e mana'omia pe a iai toega o le cysteine ​​po'o le methionine e taofiofia ai le disulfide dimerization ma carbocation alkylation. A maeʻa timuga ile diethyl ether malulu, the crude functionalized peptide is purified via preparative RP-HPLC to establish a baseline purity of $\ge 95%$ a'o le'i amataina le bioconjugation.

3. Reaction Chemistries ma Linker Engineering mo le Peptide-DNA Coupling

O le tuʻufaʻatasiga o peptide-DNA hybrids e manaʻomia le faʻafesoʻotaʻi o se amphiphilic polyanionic oligonucleotide ma se polycationic poʻo le hydrophobic peptide.. E pei ona auiliiliina i le PMC suʻesuʻega ile peptide-oligonucleotide soʻotaga taʻiala, post-synthetic liquid-phase chemo-selective ligation o le auala sili ona faatuatuaina mo le tuufaatasia o conjugates lavelave.

3.1 Thiol-Maleimide Crosslinking Chemistry

Thiol-maleimide conjugation e fai ma sui o se tasi o auala sili ona faʻaaogaina mo peptide-DNA kemisi faʻatasi. O le tali e aofia ai se faʻaopoopoga Michael nucleophilic o se sulfhydryl free (-SH) vaega i luga ole peptide ile maleimide-functionalized oligonucleotide (po o le isi itu).

Peptide-SH + Maleimide-R-DNA  ──(pH 6.8 - 7.2)──►  Peptide-S ──┐
                                                            │
                                                          O ┴ O
                                                          └─N─R-DNA

Mechanism and Protocol Parameters

• pH Pulea: O le tali e tatau ona tausia tonu i le va o le pH 6.8 ma 7.2. Lalo pH 6.5, maleimide reactivity pa'u malosi. I luga aʻe o le pH 7.5, fa'atuputeleina le fa'atupu fa'asagatau muamua amine, ma o le mama maleimide e feagai ma le fa'atauva'a alkaline hydrolysis i le maleamic acid e le gaoioi.
• Filifiliga Linker: Heterobifunctional crosslinkers pei SMCC (succinimidyl 4-(N-maleimidomethyl)cyclohexane-1-carboxylate) po'o lona vai-soluble analog Sulfo-SMCC o lo'o fa'aaogaina e fa'aliliu ai le oligonucleotides fa'aliliu amino. ($5’\text{-NH}_2\text{-DNA}$) i ituaiga maleimide-reactive aʻo leʻi faʻaopoopoina le peptide.
• Puipuiga: Fa'ato'a fa'asalaina phosphate-buffered saline (PBS, 100 mM, pH 7.0) fa'aopoopo i le 2-5 mM EDTA e fa'atulafonoina e fa'amalo ai le su'ega o ion u'amea e fa'atupuina ai le fa'ama'iina o le thiolate i dimer disulfide e le mafai..

3.2 Bioorthogonal Click Chemistry: CuAAC vs. SPAAC

Bioorthogonal click reactions e mafai ai ona tu'ufa'atasia i totonu o si'osi'omaga lavelave vai e aunoa ma le fete'ena'i fa'atasi ma filifili itū o le amino acid po'o fa'avae nucleic acid..

1. Copper-Catalyzed (CuAAC):
   Peptide-N3 + Alkyne-DNA  ──[Cu(I) / THPTA / Ascorbate]──►  Triazole-Linked Conjugate

2. Strain-Promoted (SPAAC):
   Peptide-N3 + DBCO-DNA    ──(Metal-Free, pH 7.0 - 7.4)───►  Fluorinated / Strained Triazole Conjugate

Fa'a-Catalyzed Azide-Alkyne Cyclloaddition (CuAAC)

E fa'alagolago le CuAAC i se Copper catalytic(I) ituaiga e tuufaatasia ai azides ma alkynes, faʻatupuina o se fesoʻotaʻiga 1,4-disubstituted 1,2,3-triazole malosi.

• Catalytic System: $\tusitusiga{CuSO}_4$ (1–5 mM) faʻaititia i le tulaga e ala ile sodium ascorbate (5–10 mM) i le i ai o se ligand faʻamautu apamemea solu vai e pei ole THPTA (Tris(3-hydroxypropyltriazolylmethyl)amine).
• Fa'amanuiaga: E ese le vave o tali kinetics ma fua tele.
• Tapulaa: Su'esu'eina ituaiga apamemea e mafai ona mafua ai le ROS-mediated DNA scission ma cytotoxicity, e mana'omia ai le fa'amama fa'amama fa'amama chelating resin (e.g., Chelex-100).

Fa'asa'o-Fa'aolaina Azide-Alkyne Cyclloaddition (SPAAC)

Ole SPAAC e fa'aaloa'ese le fa'amatu'u kopa e ala ile fa'aaogaina o mea e maua mai i le cyclooctyne, pei ole Dibenzocyclooctyne (DBCO) po'o le Bicyclo[6.1.0]leai se tasi (BCN).

• Tulaga Tali: Faafefiloiina o se peptide azide-bearing ma se oligonucleotide ua suia i le DBCO i totonu o le vai (pH 7.0–7.4) i le vevela o le potu e maua ai le liua atoatoa i totonu ole 4-12 itula.
• Fa'amanuiaga: 100% leai se uamea, biocompatible, ma e fetaui lelei mo veke tiliva e fa'atatau ile sela ola.

3.3 Su'esu'ega Fa'atusatusa o Su'esu'ega Fa'atasi o Peptide-DNA

4. Ta'iala Fa'apitoa mo le Peptide-Protein Bioconjugation

Peptide-protein bioconjugation e manaʻomia ai tulafono faʻatulagaina maoti pe a faʻatusatusa i le faʻaogaina o le oligonucleotide ona o le faʻaogaina o le vaivai ma le lavelave o vailaʻau masani o polotini tetele.. E pei ona otooto atu i le NIH PMC iloiloga ile polotini-DNA bioconjugation taʻiala, O le fa'atumauina o le fa'atūlaga maualuga o porotini ma le fa'aogaina o nofoaga fa'amalosi e sili ona taua.

Phase 1: Protein Amine Activation
Protein-Lys-NH2 + Sulfo-SMCC  ──────►  Protein-Lys-NH-C(=O)-R-Maleimide + NHS

Phase 2: Chemoselective Peptide Coupling
Protein-Maleimide + Peptide-SH ──(pH 7.0)──► Stable Protein-Peptide Thioether Complex

4.1 Heterobifunctional Crosslinking (NHS-Maleimide Ligation)

O le ala masani mo peptide-protein bioconjugation e fa'aaogaina fa'atasi fa'afeagai o lo'o iai se amine-reactive N-hydroxysuccinimide (NHS) ester i le tasi pito ma se vaega maleimide thiol-reactive i le isi:

1. Laa 1 (Amine Fa'atosina): Polotini ave taavale (pei ole Bovine Serum Albumin [BSA] poo Keyhole Limpet Hemocyanin [KLH]) e tali atu ma Sulfo-SMCC ile pH 7.5-8.0. The NHS ester targets surface-exposed $\epsilon$-amines of lysine residues.
2. Laa 2 (Fa'asalaina): E ave'esea le feso'ota'iga e le'i fa'a'againa e ala i le su'eina o gel po'o koluma e fa'amalo (MWCO 10 kDa).
3. Laa 3 (Peptide Conjugation): O peptides o lo'o i ai le cysteine ​​fa'apipi'i ua fa'aofiina ile pH 6.8-7.2, fausia fale mautu, fa'atasi fa'atasi ma le maleimide-activated protein carrier.

4.2 Fa'ailoga Enzymatic Fa'apitoa i Nofoaga

Ia fa'ate'a ese'ese, feso'ota'iga tele-site e fa'aleagaina ai galuega fa'apolotini, fa'aonaponei galuega fa'aoga fa'aogaina fa'agasologa o le lition enzymatic:

• Sortase A Ligation: Transpeptidase Sortase A e iloa ai le N-terminal LPXTG motif i luga o le peptide ma pipii i le va o Thr ma Gly, fausia se sootaga amide ma se oligoglycine ($\tusitusiga{Gly}_n$) 'au'au fa'ainisinia i luga ole polotini.
• SpyTag / Tekinolosi SpyCatcher: O le 13-amino-acid SpyTag peptide e fausia ai se mea e le mafai ona faʻaaogaina, covalent isopeptide sootaga ma le 116-amino-acid SpyCatcher paʻaga porotini i lalo o tulaga faʻaletino e aunoa ma le manaʻomia o mea faʻapipiʻi mai fafo..

5. Fa'amatalaga Fa'amatalaga, RP-HPLC Fa'amamaina, ma le Pulea Tulaga Lelei

O le tu'ufa'atasiga o le bioconjugates maualuga-mama e mana'omia ai le fa'amamāina fa'apitoa ma le fa'avasegaina o auala e fo'ia ai fa'ato'aga fa'atosina mai peptides muamua e le'i fa'againa., fua ole DNA, ma mea fa'a-dimerized itu.

Mo Fautuaga: Su'esu'e i taimi uma le mama o le bioconjugate e fa'aaoga ai le mata'ituina o le UV lua-umi. Seti le Ala A i 214 nm (peptide backbone peptide bonds) ma le Alale B i 260 nm (nucleic acid base absorption). Le $A_{260}/A_{214}$ fua fa'atatau e maua vave ai le fa'amaoniga chromatographic o le manuia peptide-DNA co-elution.

5.1 Fa'asagaga ma Su'esu'ega Su'esu'e-Vaega HPLC

Fa'ata'ita'iga Suavai Fa'ata'ita'iga Sili Fa'asolo (RP-HPLC) o lo'o tumau pea le tulaga auro mo le fa'a'esea fa'atasi.

• Vaega Tumau: Silica-based $\text{C}_{18}$ or $\text{C}_8$ koluma ma lapopo'a pupuni ($300,\tusitusiga{\AA}$) e manaʻomia e puipuia ai le faʻaaogaina o le peptide-oligonucleotide poʻo le peptide-protein ituaiga lapopoa..
• Vaega feavea'i mo Peptide-DNA Conjugates:
  • Puipui A: 0.1 M Triethylammonium Acetate (TEAA, pH 7.0) i le vai (galue e fai ma so'o fa'apipi'i ion mo ponaivi tua'oi DNA leaga).
  • Puipui B: 100% HPLC-grade Acetonitrile ($\tusitusiga{CH}_3\text{CN}$).
  • Gradient: Fa'alili laina mai 5% ia 60% Fa'agata B ua uma 45 minutes at a flow rate of $1.0,\text{mL/min}$.

E pei ona faamamafaina i le Lipoti a le PMC ile vaeluaga maualuga ole HPLC ole conjugates, Ion-pairing RP-HPLC mama e vavae ese le DNA hydrophilic e le'i gaoioi mai le hydrophobic peptide-DNA conjugates.

       RP-HPLC Chromatogram (TEAA / ACN Gradient)
   UV Absorbance
     │
     │     Peak 1: Free DNA (260 nm)
     │       ┌─┐
     │       │ │       Peak 2: Target Conjugate (214/260 nm)
     │       │ │          ┌───┐
     │       │ │          │   │        Peak 3: Free Peptide (214 nm)
     │     ──┴─┴──────────┴───┴───────────┌───┐──────
     └────────────────────────────────────┴───┴───────► Retention Time (min)

5.2 Fa'amaoniga o Mass Spectrometry (ESI-MS ma MALDI-TOF)

E tatau ona fa'amaonia le fa'asinomaga ma le sa'o o le fausaga e ala ile tele spectrometry:

1. MALDI-TOF MS: E mana'omia mo su'esu'ega fa'atele vave o peptide-DNA hybrids. O le conjugate e faʻafefiloi ma le 3-hydroxypicolinic acid (HPA) or $\alpha$-cyano-4-hydroxycinnamic acid (CHCA) matrix e maua mama $[\tusitusiga{M}+\tusitusiga{H}]^+$ po o $[\tusitusiga{M}-\tusitusiga{H}]^-$ fa'ailoga ion.
2. ESI-MS / LC-MS: Mana'omia mo le tele o peptide-protein conjugates. Electrospray ionization e maua ai le tele o tulaga tau ($[\tusitusiga{M}+n\text{H}]^{n+}$), o loʻo faʻamavaeina e faʻaaoga ai algorithms faʻapitoa e faʻamaonia ai le mole mole mole faʻatasi ma le saʻo o le sub-Dalton..

5.3 Gaosi Fa'amama ma Fa'amautinoaga Tulaga Lelei

Mo fa'aliliuga talosaga, e le lava le mama mata; e fa'atulafonoina le fa'amama ma le fa'atonutonuina o le endotoxin:

• Vasega 100 Gaosiga Potu Mama: Ina ia mautinoa le fa'ama'i, tuufaatasia, bioconjugation, ma le lyophilization e tatau ona faia i le Vasega 100 (ISO 5) si'osi'omaga potu mama ultra-sterile.
• Su'ega Endotoxin: Limulus Amebocyte Lysate (LAL) e tatau ona fa'amaonia le maualuga ole endotoxin ile $< 0.1,\tusitusiga{EU/mg}$ mo su'ega fa'apitoa.
• Tusi Faamaonia o Iloiloga (CoA): E tatau ona aofia ai fa'amaumauga masani a le RP-HPLC, ala tetele, ma tusi faamaonia o le sterility.
• Fua Fa'atatau Fa'apitoa: Ole maualuga ole SPAAC kiliki tali e masani lava ona ausia le $>85%$ fua o le liuaina, fa'atasi ai ma le fa'amamaina o le post-RP-HPLC e sili atu i le $>95%$ ma le maualuga o le endotoxin maualuga i lalo ole $< 0.05\tusitusiga{ EU/mg}$ gaosia i totonu o le Vasega 100 fale mama.

Ina ia ausia nei tulaga manaomia o galuega, tagata su'esu'e biopharma e masani ona fa'aogaina fa'avae tu'ufa'atasi e pei o le MOL Suia aganu'u peptide synthesis ma suiga tulaga, lea e tu'ufa'atasia ai le fa'aputuga fa'atasi, ua uma 300 suiga o galuega (e aofia ai le azide, alkyne, DBCO, ma thiol au), Vasega 100 gaosiga o potu mama, ma fa'atumu pepa HPLC/MS CoA.

6. Lu'itau Fa'atekinisi i le Fa'ateleina ma Va'aiga i le Lumana'i

Fa'aliliuga fa'aola fa'aolaola mai le su'esu'ega ole milligram ile kalama- ma le kilokalama-fua gaosiga o lo'o fa'ailoa mai ai lu'itau fa'ainisinia fa'ainisinia:

1. Hydrophobic Aggregation: Ole maualuga ole peptides ole hydrophobic e fa'apipi'iina ile DNA hydrophilic po'o polotini e mafai ona fa'aosoina ai le fa'apotopotoina e le tagata lava ia i ni fa'aputuga micellar e le mafai ona solu.. Fa'aofiina le polyethylene glycol ($\tusitusiga{PEG}{4}$ to $\text{PEG}{24}$) fa'afeso'ota'i va'ava'ai i le va o le peptide ma le au fa'atasi e fa'aleleia atili ai le soluble vai.
2. Pulea Stoichiometric: O le tele o le peptide muamua e fa'alavelaveina ai le fa'amamāina i lalo. Fa'aaogaina o kemisi kiliki sili ona filifilia (SPAAC) faatagaina latalata $1:1$ tutusa stoichiometric, matua fa'aitiitia le mamafa o le fa'amamāina ma le tau o mea mata.
3. Fa'alavelave fa'alavelave i Conjugates mafiafia: O le tu'ufa'atasia o peptide tetele i fa'avae nucleic acid i totonu po'o fa'amalo porotini tumutumu e masani ona fa'aititia ai fua o tali.. Faʻaaogaina faʻalautele, feso'ota'iga a le PEG po'o le alkane e fa'afefeteina e fa'amalieina ai le tumutumu o tagata ma fa'asao ai le bioactivity.

7. Fa'ai'uga

Peptide-DNA ma peptide-protein bioconjugation chemistries e tuʻuina atu meafaigaluega taua mo le faʻalauteleina o gafatia galue o biopharmaceuticals, su'esu'ega mole mole, ma togafiti fa'atatau. O le manuia e fa'alagolago i se metotia autasi: fa'amalieina le fa'atupuina o le peptide fa'ameamea, filifilia o au fa'atasiga bioorthogonal (thiol-maleimide, CuAAC, SPAAC), fa'ainisinia feso'ota'iga e fa'aitiitia ai fa'alavelave fa'alavelave, ma le fa'amalosia o su'esu'ega fa'apitoa RP-HPLC ma le ESI/MALDI-TOF fa'amaoniaga fa'ata'ita'iga tele. A'o aga'i i luma su'esu'ega bioconjugate aga'i i fa'aliliuga fa'apitoa, le tausisia atoatoa o tulaga tau gaosiga maʻaleʻale ma le pulea lelei lelei e tumau pea le taua i le tuʻuina atu e toe gaosia., bioconjugates malosi maualuga.

Iloiloga Fa'atino & Iloiloga Faasologa

O e fa'atulagaina peptide-DNA lavelave po'o peptide-protein conjugates mo lau biopharma R&D paipa?

Fa'afeso'ota'i ma tagata tomai fa'apitoa mo le bioconjugation e toe iloilo lau fa'asologa fa'asologa, iloilo filifiliga feso'ota'iga bioorthogonal, ma maua le tu'ufa'atasiga tu'ufa'atasiga fa'atasi i totonu o Vasega fa'amaonia 100 potu mama.

Iloiloga Fa'atekinisi: Su'esu'e fa'asologa masani, fa'alelei au, ma au'ili'ili HPLC/MS su'ega filifiliga sa'o ma MOL Suiga.