Synthesis Peptide na Bioconjugation Chemistry: Nlebanya zuru oke nke Peptide-DNA na atụmatụ njikọta nke Peptide-Protein

Synthesis Peptide na Bioconjugation Chemistry: Nlebanya zuru oke nke Peptide-DNA na atụmatụ njikọta nke Peptide-Protein

Abstract

Peptide Synthesis Supplier Bioconjugates dabere na peptide-kpọmkwem peptide-DNA chimeras na ogige peptide-protein — apụtala dị ka ihe owuwu ihe omimi dị mkpa n'ofe biopharmaceuticals ezubere iche., vectors nnyefe mkpụrụ ndụ ihe nketa, diagnostic biosensors, na ọba akwụkwọ kemịkalụ nwere DNA (DECL). Mgbakọ ziri ezi nke ngwakọ macromolecules ndị a chọrọ atụmatụ kemịkalụ modular nke na-ejikọ n'enweghị nsogbu ọ bụla na-ebute ụzọ njikọ peptide siri ike. (SPSS) na chemoselective, protocol bioconjugation nke mkpụrụ ndụ dị elu. Akwụkwọ a na-enye nyocha teknụzụ zuru oke nke peptide-DNA njikọ kemịkalụ na peptide-protein ligation atumatu. Anyị na-enyocha mgbakọ peptide precursor site na Fmoc/tBu SPPS, ntinye aka na-emeghachi omume (azides, alkynes, thiols, na chess), yana usoro mmeghachi omume ntụnyere gụnyere mgbakwunye thiol-maleimide, ọla kọpa-catalyzed (CuAAC) na-akwalite nje (SPAAC) azide-alkyne cycloaddition, na heterobifunctional crosslinking. Ọzọkwa, Anyị na-akọwapụta usoro nchacha nyocha siri ike na-eji chromatography mmiri na-arụ ọrụ dị elu. (RP-HPLC) na electrospray ionization/MALDI-TOF mass spectrometry (ESI-MS/MALDI-TOF MS), ka ọ na-akọwapụta usoro ọmụmụ siri ike yana ụkpụrụ mmesi obi ike achọrọ maka nlebawanye ntụgharị asụsụ.

Onye ode akwukwo Bio & Nkwupụta ọkachamara: Ndị dere nyocha a MOL na-agbanwe Otu nyocha Peptide, nke nwere Ph.D. ndị ọkachamara na kemịkalụ organic, bayoloji kemịkalụ, na teknụzụ bioconjugation. N'iji nnukwu aka-na nka na omenala SPPS, gafere 300 mgbanwe peptide arụ ọrụ, na Klas 100 ime ụlọ dị ọcha, otu anyị na-enye ntụzịaka nka maka agụmakwụkwọ na ndị mmepe ọgwụ n'ụwa niile.

1. Okwu mmalite: Evolution nke Peptide Hybrid Bioconjugates

Ụlọ ọrụ Peptide Synthesis Njikọ nke peptides sịntetik na oligonucleotides na protein ndị na-arụ ọrụ na-anọchite anya isi nkuku nke nkà na ụzụ ọgbara ọhụrụ na ọgwụ molekụla.. peptides sịntetik na-enye nkọwapụta ebumnuche pụrụ iche, ikike ịbanye cell, na saịtị mkpochapụ enzymatic. Mgbe covalently ejikọta na nucleic acid ma ọ bụ ndị na-ebu protein, Ngwakọ conjugates ndị a na-esi na ya pụta na-egosipụta bioactivities synergistic nke na-enweghị akụrụngwa na-enwere onwe ya.

Na nyocha ọgwụgwọ, peptides na-abanye n'ime cell (CPP) jikọtara ya na antisense oligonucleotides (ASO) ma ọ bụ obere RNA na-etinye aka (siRNA) na-akwado nnabata intracellular ezubere iche na mgbapụ endosomal. N'ime nchọpụta molecular na bayoloji kemịkalụ, peptide-oligonucleotide conjugates (Ndị POC) mee ka nyocha ịdị nso ligation nwere mmetụta dị elu yana iwu ụlọ ọba akwụkwọ nwere DNA siri ike maka nchọpụta ọgwụ.. N'otu aka ahụ, bioconjugation peptide-protein na-eje ozi dị ka kemistri ntọala maka ọgwụ mgbochi protein na-ebu peptide. (eg., KLH, BSA, ma ọ bụ OVA conjugates) yana ihe mgbochi peptide ezubere iche.

Ụlọ nyocha nke peptide synthesis Inweta nnukwu mkpụrụ, bioconjugation kpọmkwem saịtị na-enye nnukwu nsogbu kemịkalụ. Ọdịiche dị na solubility, nkwụsi ike conformational, mgbochi siri ike, na nucleophilic n'akụkụ-emeghachi omume n'etiti peptides, DNA, na ndị na-edozi ahụ na-achọ nhazi kemịkalụ nke ọma. Ihe ịga nke ọma dabere na ịhọrọ aka bioorthogonal reactive dakọtara, engineering kacha njikọ spacers, na-achịkwa oke stoichiometric, na imejuputa nchacha chromatographic dị elu.

2. Mgbakọ Precursor site na Synthesis Peptide siri ike (SPSS)

Tupu emee bioconjugation nke ala ala, Onye mmekọ peptide sịntetik ga-eji nkwụsi ike kemịkalụ zuru oke wee rụọ ọrụ ya site na iji aka na-arụ ọrụ kpọmkwem.. Mmepụta precursor ọgbara ọhụrụ na-adaberekarị na orthogonal Synthesis Peptide siri ike (SPSS) usoro.

Ntugharị igodo: peptide-DNA dị elu na peptide-protein bioconjugation chọrọ ịwụnye aka kemịkalụ n'oge mgbakọ siri ike karịa ka mkpochapụ., na-egbochi mmeghachi omume akụkụ na-abụghị nke akọwapụtara na ihe fọdụrụ n'ime amino acid nucleophilic.

       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 Ichekwa atụmatụ otu na nhọrọ resin

Ọkọlọtọ 9-fluorenylmethoxycarbonyl (Fmoc) / tert-butyl (tBu) A na-ahọrọ atụmatụ nchebe maka ịkwadebe ihe mmalite bioconjugation n'ihi ịdị nro ya, ọnọdụ nchebe isi ugboro ugboro (20% piperidine na DMF) na acidic ikpeazụ cleavage.

• Nhọrọ nkwado resin:
  • Wang resin: A na-eji ya mgbe enwere carboxylic acid C-terminal efu (-COOH) a chọrọ maka mgbako enzymatic nke ala ma ọ bụ ihe ngwọta-phase.
  • Akpụkpọ anụ Amide resin: Kachasị mma mgbe C-terminal carboxamide (-CONH2) A na-achọ capping iji ṅomie ngalaba protein nke ala, na-abawanye nkwụsi ike nke enzymatic megide carboxypeptidase, ma ọ bụ wepụ otu ionizable achọghị.

N'oge iterative yinye elongation, stric mkpọkọ na siri ike usoro (eg., hydrophobic agbatị ma ọ bụ β-ibé akwụkwọ na-adịkarị mfe ngalaba) A na-ebelata site na iji aminium/phosphonium njikọ njikọ dị ike dị ka HATU (1-[Bis(dimethylamino)methylene]-1H-1,2,3-triazolo[4,5-b]pyridinium 3-oxide hexafluorophosphate) ma ọ bụ PyBOP n'ihu DIPEA.

2.2 Ntinye aka na-arụ ọrụ na resin

Iji mee ka njikọ kemịkalụ nwee ike, A na-ejikọta otu ndị na-adịghị eme na biomolecules nke ala ozugbo na N-terminus ma ọ bụ agbụ akụkụ ụfọdụ n'oge SPPS.:

1. Azide na Alkyne Handles: Ejikọtara ya na N-terminus site na iji 5-azidopentanoic acid, 4-Pentynoic acid, ma ọ bụ Fmoc-L-Lys(N3)-OH n'oge elongation akpaghị aka iji kwado ihe mmalite maka kemịkalụ pịa.
2. Thiol Handles: Ewebata site na N-terminal ma ọ bụ C-terminal Cys(Trt) foduru. Tril (Trt) Nchedo na-adịgide adịgide n'oge nchebe Fmoc ma napụta ya n'oge nkwụsị ikpeazụ.
3. Aka maleimide: Ewebatara site na 3-maleimidopropionic acid ijikọ na N-terminus tupu agbawa TFA, Ọ bụrụ na edobere ọnọdụ nhụchasị anya ka ọ ghara imebi mgbanaka maleimide.

2.3 Nwepu, Nchedo, yana njikwa ogo crude

A na-eji trifluoroacetic acid na-egbu nkwụsị ikpeazụ site na nkwado siri ike na nkwụsị nke n'akụkụ akụkụ nke otu oge. (TFA) mmanya nwere nucleophilic scavengers:

$$\ederede{Chọkịta mkpochapụ: TFA / TIS / }\ederede{H}_2\text{O} \ederede{ / EDT } (92.5 : 2.5 : 2.5 : 2.5 \ederede{ v/v})$$

Ethanedithiol (EDT) ma ọ bụ 1,4-dithiothreitol (DTT) dị mkpa mgbe cysteine ​​ma ọ bụ methionine residues dị ugbu a iji kwụsị disulfide dimerization na carbocation alkylation.. Mgbe mmiri ozuzo na oyi diethyl ether, the crude functionalized peptide is purified via preparative RP-HPLC to establish a baseline purity of $\ge 95%$ tupu ịmalite bioconjugation.

3. Chemistries mmeghachi omume na Injinia Linker maka njikọta Peptide-DNA

Ngwakọta nke peptide-DNA ngwakọ chọrọ ijikọ amphiphilic polyanionic oligonucleotide na polycationic ma ọ bụ hydrophobic peptide.. Dị ka nkọwa na Ọmụmụ PMC na atụmatụ njikọta peptide-oligonucleotide, post-synthetic liquid-phase chemo-selective ligation bụ ụzọ a pụrụ ịdabere na ya maka ikpokọta conjugates mgbagwoju anya..

3.1 Thiol-Maleimide Crosslinking Chemistry

Njikọ Thiol-maleimide na-anọchite anya otu n'ime usoro emejuputa atumatu maka peptide-DNA njikọ kemịkalụ. Mmeghachi omume ahụ gụnyere mgbakwunye nucleophilic Michael nke sulfhydryl n'efu (-SH) Otu na peptide gaa na oligonucleotide maleimide na-arụ ọrụ (ma ọ bụ vice versa).

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

Mechanism na Protocol Parameters

• Njikwa pH: A ghaghị idowe mmeghachi omume ahụ kpọmkwem n'etiti pH 6.8 na 7.2. N'okpuru pH 6.5, maleimide reactivity na-ada nke ọma. N'elu pH 7.5, Primary amine cross-reactivity na-abawanye, na mgbanaka maleimide na-enweta asọmpi alkaline hydrolysis ruo maleamic acid na-adịghị arụ ọrụ.
• Nhọrọ njikọ: Heterobifunctional crosslinkers dị ka SMCC (succinimidyl 4-(N-maleimidomethyl)cyclohexane-1-carboxylate) ma ọ bụ Analọgụ Sulfo-SMCC nke nwere soluble mmiri ka a na-eji mee ka amino-gbanwetụrụ oligonucleotides. ($5’\text{-NH}_2\text{-DNA}$) n'ime ụdị maleimide-reactive tupu agbakwunye peptide.
• Ihe nchekwa: Degassed phosphate buffered saline (PBS, 100 mM, pH 7.0) agbakwunyere na 2-5 mM EDTA bụ iwu iji chelate trace trace metal ion nke na-eme ka thiolate oxidation banye n'ime disulfide dimers adịghị arụ ọrụ..

3.2 Bioorthogonal Pịa Chemistry: CuAAC vs. SPAAC

Mmeghachi omume ọpịpị nke bioorthogonal na-enye ohere ijikọ na gburugburu ebe mmiri dị mgbagwoju anya na-emeghachighị omume na ụdọ akụkụ amino acid nke ala ma ọ bụ ntọala 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

Ọla kọpa-catalyzed Azide-Alkyne Cycloaddition (CuAAC)

CuAAC dabere na ọla kọpa catalytic(I) ụdị iji jikọta ọnụ azides na alkynes, na-eme njikọ siri ike nke 1,4-1,2,3-triazole.

• Sistemụ catalytic: $\ederede{KuSO}_4$ (1-5 mm) sodium ascorbate belatara na ọnọdụ (5-10 mm) na ọnụnọ nke mmiri-soluble ọla kọpa-stabilizing ligand dị ka THPTA (Tris(3-hydroxypropyltriazolylmethyl)amin).
• Uru: Kinetics mmeghachi omume ngwa ngwa pụrụ iche yana mkpụrụ ọnụọgụ.
• Mmachi: Ụdị ọla kọpa na-achọpụta nwere ike ime ka DNA strand na-agbapụta ROS na cytotoxicity, chọrọ mkpocha resin chelating siri ike mgbe mmeghachi omume gasịrị (eg., Chelex-100).

Azide-Alkyne Cycloaddition kwalitere eriri (SPAAC)

SPAAC na-agafe catalysis ọla kọpa site n'iji usoro cyclooctyne arụrụ arụ ọrụ., dị ka Dibenzocyclooctyne (DBCO) ma ọ bụ Bicyclo[6.1.0]enweghị (BCN).

• Ọnọdụ mmeghachi omume: Ịgwakọta peptide na-ebu azide na oligonucleotide emeziri DBCO na nchekwa mmiri. (pH 7.0-7.4) na ụlọ okpomọkụ na-amịpụta ntụgharị zuru oke n'ime awa 4-12.
• Uru: 100% metal-free, biocompatible, ma dịkwa mma maka vector nnyefe ezubere iche maka cell.

3.3 Ntụle atụnyere nke kemịkalụ njikọ Peptide-DNA

4. Atụmatụ Saịtị akọwapụtara maka njikọ bioconjugation Peptide-Protein

Peptide-protein bioconjugation chọrọ iwu imewe dị iche iche ma e jiri ya tụnyere njikọ oligonucleotide n'ihi adịghị ike na-agbanwe agbanwe na mgbagwoju anya kemịkalụ nke nnukwu protein.. Dị ka e depụtara na Ntụle NIH PMC na atụmatụ protein-DNA bioconjugation, idowe usoro ụlọ akwụkwọ sekọndrị protein na ịnweta saịtị na-arụsi ọrụ ike bụ ihe kacha mkpa.

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)

The kpochapụwo ụzọ maka bioconjugation nke peptide-protein na-arụ ọrụ heterobifunctional crosslinkers nwere amine-reactive N-hydroxysuccinimide (NHS) ester n'otu nsọtụ yana otu thiol-reactive maleimide n'akụkụ nke ọzọ:

1. Nzọụkwụ 1 (Amin n'ọrụ): Ndị na-ebu protein (dị ka Bovine Serum Albumin [BSA] ma ọ bụ Keyhole Limpet Hemocyanin [KLH]) A na-emeghachi omume na Sulfo-SMCC na pH 7.5-8.0. The NHS ester targets surface-exposed $\epsilon$-amines of lysine residues.
2. Nzọụkwụ 2 (Na-ekpochapụ): A na-ewepụ crosslinker na-enweghị mmeghachi omume site na nzacha gel ma ọ bụ ogidi ndị na-emebi emebi (MWCO 10 kDa).
3. Nzọụkwụ 3 (Njikọ Peptide): A na-ewebata peptides nke nwere cysteine ​​sịntetị na pH 6.8-7.2, na-akpụ anụ, covalent thioether jikọtara ya na onye na-ebu protein na-arụ ọrụ maleimide.

4.2 Mkpado Enzymatic akọwapụtara saịtị

Iji kpochapụ iche iche, njikọ ọtụtụ saịtị na-emebi ọrụ protein, Arụ ọrụ ọgbara ọhụrụ na-eji usoro enzymatic ligation:

• Hazie A Ligation: Transpeptidase Sortase A na-amata ụkpụrụ N-terminal LPXTG na peptide wee kewaa n'etiti Thr na Gly., na-eme njikọ amide na oligoglycine ($\ederede{Gly}_n$) aka mebere na protein.
• SpyTag / Teknụzụ SpyCatcher: 13-amino-acid SpyTag peptide na-eme ka ọ bụrụ ihe a na-apụghị ịgbanwe agbanwe, covalent isopeptide njikọ na 116-amino-acid SpyCatcher protein onye mmekọ n'okpuru physiological ọnọdụ na-enweghị chọrọ exogenous catalysts..

5. Njirimara nyocha, RP-HPLC dị ọcha, yana njikwa ogo Sterile

Ịmekọrịta bioconjugates dị ọcha na-achọ nchacha pụrụ iche na usoro njiri mara iji dozie ngwakọ ebumnuche sitere na peptides precursor na-emebeghị., eriri DNA efu, na onwe-dimerized akụkụ ngwaahịa.

Maka ndụmọdụ: Na-enyocha ịdị ọcha bioconjugate mgbe niile site na iji nleba anya UV-wavelength. Tọọ ọwa A ka 214 nm (peptide n'azụ ọkpụkpụ peptide bond) na Channel B ka 260 nm (nucleic acid absorption isi). Ihe $A_{260}/A_{214}$ oke na-enye nkwenye chromatographic ozugbo maka njikọ elu peptide-DNA na-aga nke ọma.

5.1 Nkwadebe na Analytical Reverse-phase HPLC

Chromatography Liquid Liquid Arụmọrụ Dị Elu (RP-HPLC) ka bụ ọkọlọtọ ọla edo maka ikewapụ conjugate.

• Usoro ọdụ ọdụ: Silica-based $\text{C}_{18}$ or $\text{C}_8$ kọlụm nwere nnukwu pore nha ($300,\ederede{\AA}$) achọrọ iji gbochie mwepu nke nnukwu peptide-oligonucleotide ma ọ bụ peptide-protein ụdị..
• Usoro mkpanaka maka njikọta Peptide-DNA:
  • Buffer A: 0.1 M Triethylammonium Acetate (TEAA, pH 7.0) n'ime mmiri (na-eme dị ka onye na-ahụ maka ion-pairing maka ọkpụkpụ azụ DNA na-adịghị mma).
  • Ihe nchekwa B: 100% Acetonitrile ọkwa HPLC ($\ederede{CH}_3\text{CN}$).
  • Gradient: Linear gradient si 5% ka 60% Buffer B gafere 45 minutes at a flow rate of $1.0,\text{ml/min}$.

Dị ka ọ pụtara na Akuko PMC gbasara oke HPLC nkewa nke conjugates, RP-HPLC ion-pairing nke ọma na-ekewa DNA hydrophilic na-adịghị emezigharị na conjugates hydrophobic peptide-DNA.

       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 Nyochaa Mass Spectrometry (ESI-MS na MALDI-TOF)

A ga-enyocharịrị njirimara na iguzosi ike n'ezi ihe site na nhụsianya uka:

1. MALDI-TOF MS: Achọtara maka nyocha oke ngwa ngwa nke ngwakọ peptide-DNA. A na-agwakọta conjugate na 3-hydroxypicolinic acid (HPA) or $\alpha$-cyano-4-hydroxycinnamic acid (CHCA) matrix iji nweta dị ọcha $[\ederede{M}+\ederede{H}]^+$ ma ọ bụ $[\ederede{M}-\ederede{H}]^-$ ion akara.
2. ESI-MS / LC-MS: Dị mkpa maka nnukwu peptide-protein conjugates. Electrospray ionization na-ewepụta ọtụtụ ụgwọ steeti ($[\ederede{M}+n\text{H}]^{n+}$), nke a na-emezigharị site na iji algọridim pụrụ iche iji nyochaa oke molekụla emebibeghị ya na izi ezi nke sub-Dalton..

5.3 Mmepụta Sterile na Nkwenye Ogo

Maka ngwa ntụgharị asụsụ, raw ọcha ezughi oke; nhazi sterile na njikwa endotoxin bụ iwu:

• Klas 100 Mmepụta ụlọ ọcha: Iji kwe nkwa ịmụ nwa, njikọ, bioconjugation, na lyophilization kwesịrị igbu ya na klas 100 (ISO 5) gburugburu ime ụlọ dị ọcha nke ultra-sterile.
• Nnwale Endotoxin: Limulus Amebocyte Lysate (LAL) Nnwale ga-akwadorịrị ọkwa endotoxin n'okpuru $< 0.1,\ederede{EU/mg}$ maka ule izizi.
• Asambodo nyocha (CoA): Ọkọlọtọ anapụta ga-agụnye akara RP-HPLC nyocha, uka ụdịdị, na asambodo ịmụ nwa.
• Metrics Empirical ahụkarị: Mmeghachi omume SPAAC dị elu na-enweta $>85%$ ntughari mkpụrụ, ya na ọcha-RP-HPLC gafere $>95%$ yana ọkwa endotoxin dị ala n'okpuru $< 0.05\ederede{ EU/mg}$ emepụtara n'ime Klas 100 ụlọ ọrụ adịghị mma.

Iji mezuo ụkpụrụ arụmọrụ ndị a na-achọsi ike, Ndị na-eme nchọpụta biopharma na-ejikarị usoro ikpo okwu jikọtara ọnụ dị ka nke MOL na-agbanwe njikọ peptide omenala yana ikpo okwu mgbanwe, nke na-ejikọta njikọ siri ike-phase, gafere 300 mgbanwe ọrụ (gụnyere azide, alkyne, DBCO, na thiol aka), Klas 100 nhazi ụlọ dị ọcha, ma mezue akwụkwọ HPLC/MS CoA.

6. Ihe ịma aka nka nka na nlebawanye elu na nleba anya n'ọdịdị

Ngbanwe mmeghachi omume bioconjugation site na nyocha nyocha milligram gaa na gram- na imepụta nha kilogram na-ewebata ihe ịma aka dị iche iche nke injinịa kemịkalụ:

1. Hydrophobic mkpokọta: Nnukwu mkpokọta hydrophobic peptides jikọtara ya na DNA hydrophilic ma ọ bụ protein nwere ike ịkpalite mkpokọta onwe ya n'ime mkpọ micellar na-adịghị ike.. Na-agbakwunye polyethylene glycol ($\ederede{PEG}{4}$ to $\text{PEG}{24}$) spacer linkers n'etiti peptide na conjugation aka budata mma aqueous solubility.
2. Njikwa Stoichiometric: Oke peptide precursor na-akpaghasị ịdị ọcha nke ala. Na-arụ ọrụ kemịkalụ click dị oke nhọrọ (SPAAC) na-enye ohere nso $1:1$ stoichiometric nhata, na-ebelata nke ukwuu ibu nchacha na ọnụ ahịa akụrụngwa.
3. Ihe mgbochi Steric na Dese Conjugates: Ijikọta peptides buru ibu na ntọala nucleic acid dị n'ime ma ọ bụ loops protein jupụtara na-ebelata ọnụego mmeghachi omume.. Eji ogologo oge, PEG na-agbanwe agbanwe ma ọ bụ alkane njikọ na-ebelata oke igwe mmadụ ma na-echekwa bioactivity.

7. Mmechi

Peptide-DNA na peptide-protein bioconjugation chemistries na-enye ngwaọrụ dị mkpa maka ịgbasa ike arụ ọrụ nke biopharmaceuticals., nchọpụta molekụla, na usoro ọgwụgwọ ezubere iche. Ihe ịga nke ọma na-adabere na usoro ejikọtara ọnụ: na-ebuli njikọ peptide siri ike-phase precursor, na-ahọpụta njikwa njikọ bioorthogonal (thiol-maleimide, CuAAC, SPAAC), ndị na-ahụ maka injinịa iji belata ihe mgbochi siri ike, ma na-amanye RP-HPLC nyocha siri ike yana nkwado ESI/MALDI-TOF mass spectrometry.. Ka nyocha bioconjugate na-aga n'ihu na ntụgharị asụsụ ụlọ ọgwụ, nrube isi n'ụkpụrụ nrụpụta na-adịghị ọcha yana njikwa mma siri ike ka bụ ihe kacha mkpa n'iwepụta ihe a na-emegharị emegharị., bioconjugates dị elu.

Ntụle ohere & Nyocha usoro

Ị na-echepụta mgbagwoju anya peptide-DNA ma ọ bụ peptide-protein conjugates maka biopharma R gị&D pipeline?

Kpọtụrụ ndị ọkachamara bioconjugation teknuzu ka ha nyochaa usoro nhazi gị, nyochaa nhọrọ njikọ bioorthogonal, ma nweta nhazi usoro siri ike nke omenala n'ime klaasị enwetara 100 ụlọ ọcha.

Nyochaa ike nka nka: Nyochaa njikọ omenala, aka mgbanwe, na analytical HPLC/MS nhọrọ ule ozugbo na MOL mgbanwe.