圖1用Gαi抑制劑PTX（50 ng/ml）和Gαq抑制劑FR900359（1μM）預(yù)處理對(duì)HEK293T細(xì)胞中QRFP26（1μM）受體介導(dǎo)的Ca2+內(nèi)流的影響[1]。

同時(shí)，PTX是所有目前可用疫苗的主要成分，且該毒素抗體的存在與保護(hù)兒童免受百日咳疾病相關(guān)。因此，PTX可能繼續(xù)作為百日咳疫苗的重要組分。但由于PTX為外毒素，通過對(duì)其結(jié)構(gòu)基因進(jìn)行遺傳修飾來脫毒的方法可能激發(fā)疫苗生產(chǎn)商從化學(xué)脫毒的無細(xì)胞百日咳疫苗（Acelluar pertussis vaccine，APV）轉(zhuǎn)變?yōu)檫z傳脫毒的APV。遺傳脫毒的PTX安全性和免疫原性優(yōu)于化學(xué)脫毒的PTX。但即使轉(zhuǎn)向遺傳脫毒的PTX，APV可能仍不能防止百日咳鮑特菌感染。為實(shí)現(xiàn)該目標(biāo)，需繼續(xù)對(duì)百日咳的致病機(jī)理、免疫學(xué)變化以及抗原成分進(jìn)行研究，從而研發(fā)一種具有長(zhǎng)期免疫力和防止百日咳鮑特菌感染的新型百日咳疫苗[2]。

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參考文獻(xiàn)：

[1] Wang WW, Tian YN, Shi XL, et al. N-glycosylation of the human neuropeptide QRFP receptor (QRFPR) is essential for ligand binding and receptor activation[J]. Journal of Neurochemistry. 2021,158:138-152.

[2]李鑫, 張新創(chuàng), 謝桂林. 百日咳毒素的研究進(jìn)展[J].中國(guó)生物制品學(xué)雜志. 2018.

[3] Kaslow HR. Pertussis toxin and target eukaryotic cells: binding, entry, and activation[J]. Faseb Journal Official Publication of the Federation of American Societies for Experimental Biology, 1992, 6(9):2684-90.

[4] Ui M. Islet-activating protein, pertussis toxin: a probe for functions of the inhibitory guanine nucleotide regulatory component of adenylate cyclase[J]. Trends in Pharmacological Sciences, 1984, 5(7):277-279.

[5] Hofstetter HH, Shive CL, Forsthuber TG.Pertussis toxin modulates the immune response to neuroantigens injected in incomplete Freund's adjuvant: induction of Th1 cells and experimental autoimmune encephalomyelitis in the presence of high frequencies of Th2 cells[J]. Journal of Immunology, 2002, 169(1):117-25.

[6] Ronchi F, Basso C, Preite S, et al. Experimental priming of encephalitogenic Th1/Th17 cells requires pertussis toxin-driven IL-1b production by myeloid cells[J]. Nature Communications.2016.