Skewing of the B cell receptor repertoire in myalgic encephalomyelitis/chronic fatigue syndrome (Sato et al., 2021)

SlamDancin

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Wakiro Sato, Hirohiko Ono, Takaji Matsutani, Masakazu Nakamura, Isu Shin, Keiko Amano, Ryuji Suzuki, Takashi Yamamura,
Skewing of the B cell receptor repertoire in myalgic encephalomyelitis/chronic fatigue syndrome,
Brain, Behavior, and Immunity,
2021


Abstract

Myalgic encephalomyelitis/chronic fatigue syndrome (ME/CFS) is a debilitating condition characterized by fatigue and post-exertional malaise, accompanied by various signs of neurological and autonomic dysfunction. ME/CFS is often triggered by an infectious episode and associated with an aberrant immune system. Here we report that ME/CFS is a disorder characterized by skewed B cell receptor gene usage. By applying a next-generation sequencing to determine the clone-based IGHV/IGHD/IGHJ repertoires, we revealed a biased usage of several IGHV genes in peripheral blood B cells from ME/CFS patients. Results of receiver operating characteristic (ROC) analysis further indicated a possibility of distinguishing patients from healthy controls, based on the skewed B cell repertoire. Meanwhile, B cell clones using IGHV3-30 and IGHV3-30-3 genes were more frequent in patients with an obvious infection-related episode at onset, and correlated to expression levels of interferon response genes in plasmablasts. Collectively, these results imply that B cell responses in ME/CFS are directed against an infectious agents or priming antigens induced before disease onset.

https://www.sciencedirect.com/science/article/pii/S0889159121001537?via=ihub
 
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Pyrrhus

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This appears to be their main point:

Sato et al 2021 said:
IGHV3-30 and IGHV3-30-3 genes were more frequent in patients with an obvious infection-related episode at onset, and correlated to expression levels of interferon response genes in plasmablasts. Collectively, these results imply that B cell responses in ME/CFS are directed against an infectious agent