Scaling Custom Peptide Synthesis: Mmeri Biopharma R&D ọkpọ ọkpọ

Usoro kemịkalụ nke nchịkọta on-resin na usoro Peptide siri ike

Ngwakọta peptide siri ike (SPSS) na-adabere na ọzịza na-aga n'ihu na ngwọta nke matriks peptidyl-resin na-eto eto. Agbanyeghị, ka agbụ peptide na-agbatị - na-amalitekarị n'etiti ihe fọdụrụnụ 5 na 15-intramolecular na intermolecular hydrogen bonding nwere ike ịkpalite mgbanwe site na ngbanwe nke eriri igwe na-enweghị usoro gaa n'ụkwụ., ihe owuwu nke abụọ β-akwụkwọ iwu.

Inter-Chain β- Mpempe akwụkwọ Mgbasa & Ngwọta daa

Mgbe ị na-eto peptide chains na-agbakọta na nkwado siri ike, matriks resin na-ada ma tụfuo ikike ọzịza. Ndakpọ ụlọ a na-eli amine N-terminal, na-eke ihe mgbochi siri ike na-egbochi mgbasa reagent nke ukwuu. N'ihi ya, ọkọlọtọ Fmoc nchebe na amino acid njikọ mmeghachi omume akwụsịla, na-eduga n'usoro mpịachi, nhichapụ adịghị ọcha (des-amino acid sitere na ngwaahịa), na mmeghachi omume ezughị ezu nke enweghị ike ịmecha ya ọbụlagodi na ogologo oge njikọta ma ọ bụ oke reagent dị elu..

Usoro hydrophobic nwere aromatic ma ọ bụ β-alaka amino asịd (eg., Val, Ya na, Leu, Phe, Taịa) na-enwekarị ike ịchịkọta. Ọmụmụ ihe eji arụ ọrụ na nso nso a gbasara mkpokọta peptide dabere na usoro nke ebipụtara na Chemistry okike (2026) gosiputara na mgbochi siri ike nke mpaghara jikọtara ya na njikọ n'etiti yinye nwere ike ibelata ọnụego ngbanwe otu nzọụkwụ site na >99% gbadaa na-erughị 70%. Ihe karịrị njikọ 30-mer, a dobe na nkezi nzọụkwụ mkpụrụ si 99% ka 90% na-ebelata mkpokọta crude mkpụrụ si 74% n'okpuru 4%.

Ụdị ọdịda usoro nchịkọta SPPS:

Solvated Chain (Random Coil) → Inter-Chain H-Bonding → β-Sheet Secondary Structure → Resin Shrinkage & Amine Burial(Ọzịza dị elu, Ntughari >99%) ———————————————————–> (Truncations & Nhichapụ >30%)

Mbelata atụmatụ: Pseudoproline dipeptides, Nchekwa azụ, na nkwado dị ala

Iji mebie β-sheet nucleation n'oge mgbakọ, Ndị na-ahụ maka kemịkalụ usoro na-eji mmemme nhazi ezubere iche:

1. Pseudoproline dipeptides (Oxazolidines): Na-agbakwunye Fmoc-X-Ser(ehi)-OH, Fmoc-X-thr(ehi)-OH, ma ọ bụ Fmoc-X-Cys(ehi)-OH dipeptides na-ewebata mgbanaka oxazolidine nwere ike ịtụgharị nke na-arụ ọrụ dị ka "kink" nhazi. (cis-proline mimic) n'ime ọkpụkpụ peptide. Nke a na-agbaji netwọk intermolecular na-ejikọta hydrogen ma weghachite resin resin. Na-esochi mkpochapụ na ọkọlọtọ trifluoroacetic acid (TFA) mmanya mmanya, mgbanaka oxazolidine na-emepe nke ọma iji megharịa nwa amaala Ser, Thr, ma ọ bụ Cys fọdụrụnụ.

2. Otu ndị na-echebe ọkpụkpụ azụ: N-alkylation nwere ike ịtụgharị site na iji otu nchekwa nwa oge dịka Hmb (2-hydroxy-4-methoxybenzyl) ma ọ bụ Dmb (2,4-dimetoxybenzyl) na-egbochi njikọ nke acid acid n'azụ ọkpụkpụ hydrogen. Debere ọ bụla 5 ka 6 foduru, Otu ndị a na-enwe nsogbu n'agbụ n'ime oge niile.

3. Peptide Synthesis Resin Load Calibration: Resin na-ebuli elu (0.6-1.0 mmol / g) na-eme ka mmekọrịta dị n'etiti yinye ka njọ site n'itinye agbụ na-eto eto na nso nso. Na-eji resins na-ebu ala (0.15-0.25 mmol / g) na polyethylene glycol (PEG)-polystyrene anyadokwa ma ọ bụ PEG matrices dị ọcha (dị ka ChemMatrix) na-abawanye ohere n'etiti yinye, budata imeziwanye ngwọta maka ihe siri ike, nchikota-enwere ike iche iche.

4. Thermal & Ngwa ngwa igwe igwe: Ike ọkụ na-achịkwa (50Celsius C-80C) n'oge njikọta na nchekwa usoro na-akpaghasị netwọk nchịkọta na-adịghị ike na-adịghị ike, na-eme ngwa ngwa mmeghachi omume kinetics na-enweghị ịkwalite ịgba ọsọ mgbe ejikọtara ya na reagents dị nro dị ka DIC/Oxyma Pure.

Mgbanwe mgbagwoju anya & Mgbochi ihe owuwu dị na Peptides Multi-Functional

Usoro ọgwụgwọ peptide nke oge a na-agbasawanye karịa linear, usoro anaghị agbanwe agbanwe. Pipeline nke biopharma chọrọ usoro cyclic ọtụtụ, Lipid kpọmkwem saịtị ma ọ bụ njikọ PEG, yana akara ọrụ pụrụ iche iji bulie profaịlụ ọgwụ ọgwụ yana njikọ njikọ nnabata..

Na-agagharị Mkpuchi mgbanaka Multi-Disulfide & Regioselective Oxidation

Peptides nwere otutu disulfide bond (dị ka analogues nke linaclotide, ziconotide, ma ọ bụ ihe mgbochi bicyclic peptides) chọrọ njikwa siri ike n'ụzọ mpịachi iji gbochie mgbaghara, isomers disulfide na-abụghị ala. Ọdịda ikuku oxidation nke usoro poly-cysteine ​​​​na-ewepụtakarị ngwakọta thermodynamic dị mgbagwoju anya nke siri ike dị ọcha site na prep-HPLC..

Iji nweta ọcha, nhazi nke disulfide regioselective, A na-etinye usoro nchebe nke cysteine ​​​​orthogonal:

• Jikọọ 1 (Trt): Ekewara n'oge mkpochapụ resin ọkọlọtọ TFA; oxidized mbụ na obere mmiri nchekwa ma ọ bụ DMSO/mmiri ngwakọta.

• Jikọọ 2 (Acm / Mmt): Ọkpụkpọ TFA kwụsiri ike ruo dị nro; Nhọrọ oxidized on-resin ma ọ bụ na ngwọta na-eji ayodiin (I₂) ma ọ bụ thallium(III) trifluoroacetate.

• Jikọọ 3 (StBu / Pyth): Ejiri dithiothreitol kechie ya nke ọma (DTT) ma ọ bụ trialkylphosphines tupu ịgba ọsọ cyclization eduzi ikpeazụ.

Eduziri onye na-eme ihe, oxidation nke amamihe dị na ya na-eme ka njikọ dị n'etiti obodo dị mma, na-akpali regioselective ịdị ọcha n'elu 90% tupu nkwadebe ikpeazụ-HPLC polishing.

Strategy Oxidation Tri-Disulfide Orthogonal:

• Nzọụkwụ 1 (Oxidation ikuku): Linear Sequence [Cys1/4(Trt), Cys2/5(Acm), Cys3/6(Ìgwè mmadụ)] → Mgbanwe nke ọnụahịa TFA & Ọdịda ikuku Oxidation → 1-Disulfide Intermediate [Cys1-Cys4 Haziri]

• Nzọụkwụ 2 (Iodine oxidation): 1-Disulfide Intermediate → Iodine (I₂) Ọgwụgwọ → 2-Disulfide Intermediate [Cys1-Cys4 & Cys2-Cys5 kpụrụ]

• Nzọụkwụ 3 (Thallium/TFA Oxidation): 2-Disulfide Intermediate → Tl(CF₃COO)Ọgwụgwọ ₃/TFA → Fully Folded Monomer [Ụmụ amaala Cys1-Cys4, Cys2-Cys5, Njikọ Cys3-Cys6]

Lipidation, PEGylation, na Isotope/Fluorescent Tagging na Scale

Njikọ fatty acid chains (eg., palmitic acid, myristic acid, diacid spacers maka njikọta albumin) ma ọ bụ monodispersse PEG chains gbatịrị peptide ọkara ndụ (t 1/2) dị ndụ. Agbanyeghị, Agbụ acyl fatty hydrophobic na-agbanwe n'ụzọ dị egwu n'oge ọrụ SPPS.

Mgbe ị na-eme mgbanwe saịtị akọwapụtara, na-eji orthogonal nchekwa Lys-dị ka Lys(Dde) ma ọ bụ Lys(ivDde)- na-enye ohere nchekwa nchekwa hydrazine na-ahọrọ na-enweghị nsogbu azụ Fmoc/tBu na-echebe otu.. Iji ndị pụrụ iche mgbagwoju anya Peptides sịntetik mgbanwe peptide na arụ ọrụ n'ofe 300+ Nhọrọ otu na-arụ ọrụ na-enyere aka ijikọ mkpado fluorescent ezubere iche (FITC, Cy5), isotopes kwụsiri ike (^{13}C, ^{15}N), ma ọ bụ ndị na-arụkọ ọrụ na-arụ ọrụ na-arụ ọrụ na-arụ ọrụ nke ọma na saịtị.

Nchacha nke mgbada & Njikwa mgbochi: Na-edozi ihe mgbochi Prep-HPLC

Njikọ njikọ dị n'elu na-achịkwa usoro akụ na ụba dị ọcha ozugbo. N'ichepụta peptide buru ibu, prep-HPLC nsacha na-anọchite anya ruo 60% nke ngụkọta mmepụta ụgwọ n'ihi elu mobile-phase mgbaze oriri, eyi na-anọdụ ala, yana ikike ibu dị ala mgbe a na-edozi adịghị ọcha na-ekpochapụ nke ọma.

Mkpebi Chromatographic nke usoro nhichapụ na ndị diastereomers

Ihe dị mkpa na mkpebi prep-HPLC dị mma bụ nhọrọ kemistri kọlụm na injin gradient. Ebe ọkọlọtọ C18 kwụ n'ahịrị na-enye ndogide siri ike maka peptides linear hydrophobic, usoro mgbagwoju anya ma ọ bụ amphipathic na-eritekarị uru site na nhọrọ nhazi oge ọzọ:

• Usoro C8 na C4: Belata njikọ na-enweghị ike ịtụgharị na ọdụ ọdụ kacha elu maka hydrophobic ma ọ bụ peptides lipidated.

• Phenyl-Hexyl & PFP (Pentafluorophenyl) Usoro: Na-enye mmekọrịta pi-pi emelitere maka idozi diastereomers na-esi ísì ụtọ na ihe mkpofu agbụrụ (eg., D-His ma ọ bụ D-Trp dị iche iche).

• Okpomọkụ & Mgbanwe pH: Na-agba ọsọ ogidi nkwadebe na okpomọkụ dị elu (40Celsius C-60C) ma ọ bụ na-edozi mobile-phase pH (iji triethylammonium phosphate ma ọ bụ ammonium acetate buffers) na-agbanwe usoro nhazi nke abụọ na ngwọta, na-ekewa usoro mkpochapụ na-ekpochapụ anya (n-1 umu) site na ebumnuche API ogologo zuru oke.

Maka ndụmọdụ: Nkwalite ikike ibu
Na-agbaze peptide crude n'ime ihe solubilizers organic siri ike dị ka dimethyl sulfoxide (DMSO) ma ọ bụ hexafluoroisopropanol (HFIP) tupu ịkwanye kọlụm prep-HPLC na-egbochi mmiri ozuzo na kọlụm. Na-eji usoro mkpanaaka mmiri na-eme ka inline plọg agbanyere (lekwasịrị anya ntụtụ) na-amụba ọdịdị kachasị elu ma na-amụba ikike ịkwado nkwado ugboro abụọ n'otu ọsọ.

Ileba anya: Ntụgharị Ntugharị Mmepụta
Na mkpọsa nrịgo elu karịrị 100 gram, mgbanwe mgbanwe kọlụm static nwere ike iduga ngbanwe pH mpaghara yana mkpokọta enwere ike ịtụgharị. Na-etinye akaghị aka mgbagharị gradient siri ike yana oyi 0.1 M ammonium acetate (4Celsius C) na-egbochi mfu solubility ka ọ na-enweta mgbanwe mgbanwe na-agbanwe agbanwe na <0.5 wt% fọdụrụnụ TFA.

Mgbanwe mgbanwe: Ntugharị site na TFA gaa Acetate na chloride nnu

Ọkọlọtọ RP-HPLC dị ọcha na-eji trifluoroacetic acid (TFA) dị ka ion-pairing reagent na-amụcha ọnụ ọgụgụ chromatographic ma kpochapụ ụdọ akụkụ amino acid bụ isi. (Arg, Lys, Ya). N'ihi ya, Nnukwu peptides dị ọcha dịpụrụ adịpụ dị ka nnu TFA nwere ihe ruru 10%-15% trifluoroacetate counterions..

Maka nyocha ozugbo in vitro, ọmụmụ anụmanụ, na ule ụlọ ọgwụ mmadụ, TFA fọdụrụnụ na-ebute nnukwu ihe egwu nsi, na-egbochi mmụba cell na mgbagwoju anya njedebe immunological. Ịtụgharị nnu TFA ka ọ bụrụ ọkwa ọkwa ọgwụ bụ iwu:

1. Acetate Exchange: A na-ebunye ngwọta peptide dị ọcha na kọlụm RP-HPLC nke abụọ, na-asa ya 0.1 M ammonium acetate ma ọ bụ sodium acetate buffer, A na-ewepụ ya na acetonitrile aqueous.

2. Mgbanwe chloride: Maka peptides lekwasịrị anya chọrọ nnukwu solubility na nkwụsi ike, na-asa kọlụm na itughari hydrochloric acid (0.01 M HCl) na-atụgharị counterions ka ọ bụrụ nnu chloride.

3. Nyocha nyocha: chromatography gas isi (GC) ma ọ bụ ion chromatography (IC) na-egosi na ebelatala ọdịnaya TFA fọdụrụnụ n'okpuru 1.0 wt%, na-agbaso ụkpụrụ biopharma mba ụwa.

Klas 100 Njikwa ime ụlọ dị ọcha nke Ultra-Sterile & Nchekwa Endotoxin

Na nyocha nke ọma na mmepe ọgwụ, Ogo peptide gbatịrị agbatị karịa ịdị ọcha kemịkalụ HPLC. Mmetọ microbial, ikuku na-ekesa, na nje bacteria endotoxins (lipopolysaccharides, LPS) na-eweta nnukwu ihe egwu ndu. Chọpụta ọkwa endotoxin n'ime batches peptide omenala nwere ike ime ka ihe nnabata dị ka Toll rụọ ọrụ 4 (TLR4), na-eme ka nzaghachi mkpali ụgha dị mma na nyocha nke cell ma ọ bụ ahụ ọkụ na anaphylaxis na ụdị anụmanụ.

Nrụpụta Nkwenye Ogo Ọdịmma Sterile:

Synthesis & Cleavage → Prep-HPLC & Counterion Exchange → Class 100 Isolation → Final Freeze-Drying(Ọkọlọtọ gburugburu ebe obibi SPPS) → (Ngbanwe TFA ka Acetate) → (ISO 5 Ihe mkpuchi HEPA nzacha) → (LAL Endotoxin <0.01 EU/mg)

Microbial & Ngwakọta dị iche iche na arụ ọrụ mkpochapụ

Iji kwe nkwa nchekwa ndu, arụ ọrụ post-cleavage, mgbanwe counterion, lyophilization, na ndochi vial ikpeazụ ga-emerịrị n'ime ọnọdụ gburugburu ebe obibi a na-achịkwa nke ọma.

Nke Ntuziaka American Peptide Society maka ibelata mkpokọta SPPS na njikwa ime ụlọ dị ọcha na-ekwusi ike na njikwa oghere n'oge ikuku rotary ma ọ bụ ihicha ihicha na-ewebata bioburden ambient.. Iji agbakwunyere Klas 100 sterility ụlọ dị ọcha na nyocha QC akụrụngwa - arụ ọrụ n'okpuru ISO 5 mkpuchi ikuku ikuku laminar nwere nzacha HEPA-na-egbochi mbanye na microbial colonization n'oge ikewapụ ngwaahịa ikpeazụ..

Nnwale ọnụọgụ LAL Endotoxin maka In Vitro na Nchekwa Vivo

Ogbe peptide ọ bụla emebere maka nleba anya n'ihe gbasara ndu kwesịrị ịnwe nnwale ntọhapụ siri ike:

• Nyocha LAL Chromogenic: Quantitative Limulus Amebocyte Lysate (LAL) nnwale ma ọ bụ recombinant Factor C (rFC) Nnwale fluorometric na-achọpụta ọkwa endotoxin.

• Oke nnabata Biopharma: Ọkọlọtọ nyocha-ọkwa peptides na-enwekarị ọkwa endotoxin >10 EU/mg. Maka omenala cell mbụ nwere mmetụta, nyocha nke organoid, na in vivo parenteral ochichi, Ekwesịrị ịchịkwa ọkwa endotoxin <0.01 ka 0.1 EU/mg.

• Mmiri dị ọcha & Glassware depyrogenated: Na-eji mmiri na-enweghị pyrogen maka ịgba ọgwụ na-ahazi usoro nchachacha niile (WFI) na ihe ndị na-ekpo ọkụ na-ekpo ọkụ (250Celsius C maka 30 nkeji) na-ewepụ mmetọ endotoxin na isi iyi.

Matrix mkpebi: Ịhọrọ ezigbo onye mmekọ Peptide CDMO/CRO

Ịhọrọ onye na-ere ihe nzụkọ omenala chọrọ nyocha ikike nka n'ofe mgbagwoju kemịkalụ, ike nyocha, na usoro njikwa mma. Matriks dị n'okpuru na-akọwapụta njirisi nlele anya mgbe ị na-ahọpụta onye mmekọ maka mmụkọ mkpokọta peptide omenala:

Mgbe ị na-enyocha ndị mmekọ maka nkwado ọrụ ogologo oge, ndị na-emepụta biopharma na-erite uru site na itinye ego scalable omenala peptide njikọ ọrụ nke na-enye nnyefe teknụzụ enweghị nkebi site na nyocha nyocha milligram gaa na mmepụta IND na-enye kilogram.

Ajụjụ a na-ajụkarị (FAQ)

Kedu ihe na-akpata nnukwu mkpụrụ na-agbada n'oge nhazi peptide omenala?

Mbelata mkpụrụ siri ike n'oge mmụba bụ isi ihe na-ebute na resin β-sheet nchịkọta nke usoro amino acid hydrophobic.. Ka yinye ogologo na-abawanye, inter-chain hydrogen bonding ndakpọ na-ebelata resin ọzịza na-eli N-terminal amines, na-eduga na njikọ ezughị ezu na usoro mkpochapụ ewepụghị.

Kedu ka esi egbochi nchịkọta peptide on-resin n'oge njikọ?

A na-egbochi nchịkọta on-resin site na itinye pseudoproline dipeptides (na ọnọdụ Ser/Thr/Cys), iji otu nchekwa N-ọkpụkpụ azụ nwa oge (Hmb/Dmb), na-ebelata ikike ntinye resin ruo 0.15-0.25 mmol/g, na tinye n'ọrụ ngwa ndakwa nri thermal kpo oku (50Celsius C-80C) n'oge njikọ nzọụkwụ.

Kedu ihe kpatara mgbanwe mgbanwe TFA dị mkpa maka peptides ọgwụgwọ?

Ọkọlọtọ prep-HPLC dị ọcha na-eji trifluoroacetic acid (TFA), na-ahapụ 10-15 wt% TFA fọdụrụnụ na ngwaahịa peptide. TFA na-egosiputa nsi cellular ma na-egbochi nyocha nke ndu ndu. Ịtụgharị nnu TFA ka ọ bụrụ acetate ma ọ bụ chloride salts na-ebelata TFA fọdụrụnụ ka <1.0 wt%, n'ịhụ na ndakọrịta na ọmụmụ in vitro na in vivo.

Kedu ọkwa endotoxin na-anabata maka nyocha mkpụrụ ndụ na ọmụmụ vivo?

Maka nyocha biochemical ọkọlọtọ, ọkwa endotoxin dị n'okpuru 1.0 Enwere ike ịnabata EU/mg. Agbanyeghị, maka omenala sel ndị mbụ nwere mmetụta, organoids, na ụdị anụmanụ, Ekwesịrị ijikwa ọkwa endotoxin nke ọma <0.01 ka 0.1 EU/mg iji gbochie mkpali TLR4 na-akpasu iwe na arịa cellular na-abụghị nke akọwapụtara..

Atụmatụ na-esote usoro maka Biopharma R&D Projects

Na-aga nke ọma ịga n'ihu usoro peptide gbagwojuru anya site na imewe molekụla gaa n'ihe ogbe anụ ahụ nwere ike imepụtagharị chọrọ ịhazi njiri mara kemịkalụ yana njikwa gburugburu ebe obibi siri ike.. Ịgafe mkpọkọta mkpọkọta n'isi mmalite nke usoro na-echebe usoro iheomume ma na-ahụ maka ọrụ ndu ndị a pụrụ ịdabere na ya.

Ọ bụrụ na ndị otu gị na-agagharị nchịkọta usoro mgbagwoju anya, multi-disulfide mgbanaka mmechi, ma ọ bụ oke endotoxin siri ike maka ọmụmụ ihe izizi na-abịa:

• Ntụle nka nka: Nyochaa nhazi usoro gị, profaịlụ hydrophobic, na mgbanwe chọrọ na ndị ọkachamara peptide chemists na MOL na-agbanwe ikpo okwu peptide omenala.

• Ntụle ohere: Rịọ ohere izizi yana nlebanya elu maka ebumnuche usoro ihe ịma aka site na scalable omenala peptide njikọ ọrụ.

• Ịgba nwa & Nyochaa QC: Nyochaa ngwugwu data nyocha, gụnyere HRMS mass spectra, RP-HPLC chromatograms, na asambodo nnwale LAL endotoxin ahaziri dabere na ụkpụrụ nyocha ụlọ ọgwụ gị.