Introduction: Huge amounts of gene-sequencing data have been used to guide fundamental researches. The study combined bioinformatics tools with basic study to analyze the pathological mechanisms of diffuse large B-cell lymphoma.
Methods: A LncRNA-miRNA-mRNA ceRNA network of diffuse large B cell lymphoma was constructed by GTEx combined with TCGA database analysis. qPCR was used to detect the expression of LINC00963 and miR-320a in DLBCL cell lines. The proteins levels of UPR sensors, GRP78, p-IRE1α, IRE1α, active ATF6, ATF4 and XBP1, were assessed through Western blot, along with apoptosis markers (Bcl-2, Bax, caspase 3) and autophagy indicators (Beclin1, LC3II, LC3I and p62) after LINC00963 overexpression or miR-320a overexpression in vitro. Additionally, the expression of LC3 was analyzed through immunofluorescence (IF) assay.
Results: Evaluation of SUDHL4 cell showed marked up-regulation of key elements of the UPR (GRP78, p-IRE1α, spliced XBP-1(XBP-1(s))), apoptosis (Bax, cleaved caspase 3) and autophagy (Beclin1, LC3II) after LINC00963 overexpression in vitro, whereas miR-320a mimic reversed the effects. Besides, LINC00963 targeted miR-320a while miR-320a bound to the 3’UTR of XBP1. The work also found that LINC00963 overexpression resulted in significant tumor growth delay in a xenograft model of DLBCL.
Conclusion: Mechanistically, LINC00963 / miR-320a regulated XBP1-apoptosis pathway and autophagy, making this pathway an attractive therapeutic target for selective targeting. The data presented here are the first to comprehensively survey the mechanism of LINC00963 / miR-320a/XBP1 in DLBCL.

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Posted 01 Apr, 2021
On 04 May, 2021
Received 03 May, 2021
Received 18 Apr, 2021
On 15 Apr, 2021
Received 15 Apr, 2021
On 12 Apr, 2021
On 09 Apr, 2021
Received 09 Apr, 2021
Invitations sent on 29 Mar, 2021
On 21 Mar, 2021
On 21 Mar, 2021
On 21 Mar, 2021
On 21 Mar, 2021
Posted 01 Apr, 2021
On 04 May, 2021
Received 03 May, 2021
Received 18 Apr, 2021
On 15 Apr, 2021
Received 15 Apr, 2021
On 12 Apr, 2021
On 09 Apr, 2021
Received 09 Apr, 2021
Invitations sent on 29 Mar, 2021
On 21 Mar, 2021
On 21 Mar, 2021
On 21 Mar, 2021
On 21 Mar, 2021
Introduction: Huge amounts of gene-sequencing data have been used to guide fundamental researches. The study combined bioinformatics tools with basic study to analyze the pathological mechanisms of diffuse large B-cell lymphoma.
Methods: A LncRNA-miRNA-mRNA ceRNA network of diffuse large B cell lymphoma was constructed by GTEx combined with TCGA database analysis. qPCR was used to detect the expression of LINC00963 and miR-320a in DLBCL cell lines. The proteins levels of UPR sensors, GRP78, p-IRE1α, IRE1α, active ATF6, ATF4 and XBP1, were assessed through Western blot, along with apoptosis markers (Bcl-2, Bax, caspase 3) and autophagy indicators (Beclin1, LC3II, LC3I and p62) after LINC00963 overexpression or miR-320a overexpression in vitro. Additionally, the expression of LC3 was analyzed through immunofluorescence (IF) assay.
Results: Evaluation of SUDHL4 cell showed marked up-regulation of key elements of the UPR (GRP78, p-IRE1α, spliced XBP-1(XBP-1(s))), apoptosis (Bax, cleaved caspase 3) and autophagy (Beclin1, LC3II) after LINC00963 overexpression in vitro, whereas miR-320a mimic reversed the effects. Besides, LINC00963 targeted miR-320a while miR-320a bound to the 3’UTR of XBP1. The work also found that LINC00963 overexpression resulted in significant tumor growth delay in a xenograft model of DLBCL.
Conclusion: Mechanistically, LINC00963 / miR-320a regulated XBP1-apoptosis pathway and autophagy, making this pathway an attractive therapeutic target for selective targeting. The data presented here are the first to comprehensively survey the mechanism of LINC00963 / miR-320a/XBP1 in DLBCL.

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7
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